TNAG-1508-FCO40-2066-Guangdong-nuclear-power-station-project-at-Daya-Bay-safety-c-1987 — Page 99

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And large-size y-ray irradiation apparatus, with the source- storage capacity above 500,000 or 1,000,000 curies, is usually

employed for commercial production.

In accordance with their application, the y-ray irradiation

apparatus can be divided into the research-type, production-

type and special-production type.

Research-type Y-ray irradiation apparatus is relatively

small in size, but the requirement for the dosimetric system

and researching means is stricter. In the China-designed and

China constructed y-ray irradiation hot-house of the Agricultural

Science Institute of Heilongjiang Province, a revolving

irradiating platform which is capable of conducting both re-

volution and rotation is installed.

This represents a special

design for ensuring an average and even absorption of dose and

for facilitating dosimetric monitoring.

The production-type irradiation apparatus are mostly required

to have multi-purpose and synthetical treatment functions.

Therefore, the design for the conveying system of the irradiated

products should have satisfactory adaptability and flexibility.

Special-production-type ray irradiation apparatus are

such irradiation apparatus specially used for sterilization of

medical instruments, irradiation of liquid food, etc.

The Translation Division of Ta. Dao Publishing Ltc.